$(function(){
// 字体大小:0.24,0.26,0.28,0.30,0.32
	var num=28;

	$('.word-intro .big').click(function(){
		num+=2;
		if(num>=32)
		{
			num=32;
		}
		$('.para').css('font-size',(num/100)+'rem');
	});
	$('.word-intro .small').click(function(){
		num-=2;
		if(num<=24)
		{
			num=24;
		}
		$('.para').css('font-size',(num/100)+'rem');
	});


});
